CN106045990A - Phenanthroline derivative and use thereof - Google Patents

Phenanthroline derivative and use thereof Download PDF

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CN106045990A
CN106045990A CN201610055491.9A CN201610055491A CN106045990A CN 106045990 A CN106045990 A CN 106045990A CN 201610055491 A CN201610055491 A CN 201610055491A CN 106045990 A CN106045990 A CN 106045990A
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substituted
unsubstituted
layer
coffee quinoline
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CN106045990B (en
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颜丰文
庄立杰
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JIGUANG TECHNOLOGY Corp
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Abstract

The present invention relates to a kind of coffee quinoline derivants, and structure is by shown in formula (I), wherein the definition of Ar, m, n, p and R1 to R4 are identical as description herein. The present invention is also related to a kind of electromechanical excitation device, and aforementioned coffee quinoline derivant is used to stop electron transfer layer or electron transfer layer as electric hole, can express excellent efficiency, such as: it reduces driving voltage and power dissipation, increase efficiency and half-life.

Description

Coffee quinoline derivant and application thereof
Technical field
It is said that in general, the present invention is about a kind of coffee quinoline derivant and a kind of organic electric shock utilizing aforementioned coffee quinoline derivant (the most organic EL) light-emitting device.More specifically, the present invention has formula (I) chemical constitution about one Coffee quinoline derivant, and a kind of use this coffee quinoline derivant with formula (I) structure to stop electric transmission material as electricity hole Material (hole blocking electron transport material, HBETM) and electron transport material (electron Transport material, ETM) organic el device.
Background technology
Organic electric-excitation luminescent (organic EL) is a kind of light emitting diode (LED), and wherein luminescent layer is by organic compound The film that thing is made, it can emit beam under corresponding electric current.The luminescent layer of organic compound is located in two electrodes Between.Organic EL due to its high illumination, low weight, Low-profile, from illumination without backlight, low-power consumption, Wide viewing angle, high-contrast, manufacture method be simple and response time quick characteristic and be applied in flat faced display.
Observe for the first time the phenomenon of organic material electroluminescence be generation nineteen fifty in early days by An Deliebei nano this (Andre Bernanose) and colleague are carried out in France Nancy. university (Nancy-University).New York University The Martin Pu primary (Martin Pope) of (New York University) and its colleague are in 1963 the most under vacuo Unidirectional current (DC) electroluminescence is observed on the single pure crystal of the anthracene doped with aphthacene.
First diode apparatus in 1987 by the Deng Qingyun (Ching of Eastman Kodak Company (Eastman Kodak) W.Tang) delivered with Shi Diwenfansi Rec (Steven Van Slyke).The use of this device has separately positioned Electricity hole transport layer and the double-decker of electron transfer layer so that running voltage reduces and improves efficiency, when leading current Organic EL research in generation and device produce.
Typically, organic EL is to be made up of the organic material layer between two electrodes, and it includes the transmission of electricity hole Layer (hole transporting layer, HTL), luminescent layer (emitting layer, EML), electron transfer layer (electron transporting layer, ETL).The fundamental mechanism of organic EL relates to the note of carrier (carrier) Enter, the transmission of carrier, recombinate and form exciton (exciton) with luminescence.When external voltage is applied to organic light emission dress When putting, electronics and electricity hole are injected from negative electrode and anode respectively, and electronics will be injected into minimum vacant molecular orbital from negative electrode In (lowest unoccupied molecular orbital, LUMO), and electricity hole will be injected into the highest taking from anode In molecular orbital (highest occupied molecular orbital, HOMO).When electrons and holes is in luminescent layer During restructuring, form exciton and luminescence subsequently.When light emitting molecule absorb energy and when reaching excited state, according to electronics and The spin combination in electricity hole, exciton can be in singlet state or triplet.The exciton of 75% is formed by the restructuring of electronics and electricity hole And reach triplet excited state.It is spin forbidden (self forbidden) from triplet decay.Therefore, fluorescence electric shock Light-emitting device only has the internal quantum of 25%.Compared to fluorescence el light emitting device, phosphorescence organic light-emitting diodes Pipe utilizes spin-orbital interaction (spin-orbit interaction) can promote the system between singlet state and triplet Between pass through (intersystem crossing), thus obtain from singlet state and the luminescence of triplet, and be electrically excited The internal quantum of electro-optical device rises to 100% from 25%.
In recent years, Anda professor (Adachi) and colleague's research and development one thereof combine thermally activated delayed fluorescence (thermally Activated delayed fluorescence, TADF) mechanism novel fluorescence organic el device, it is by instead To between system, pass through (reverse intersystem crossing, RISC) mechanism, the triplet of spin forbidden is swashed Son converts to singlet state energy rank the high efficiency one formed to obtain exciton and has promising mode.
Triplet and singlet excitons all can be utilized by the organic EL of phosphorescence.Due to compared with singlet excitons, triplet Exciton has longer vital stage and diffusion length, the organic EL of phosphorescence it is generally required to luminescent layer (emitting layer, EML) and between electron transfer layer (electron transporting layer, ETL), extra barrier layer, electric hole is set (hole blocking layer, HBL) or there is the electron transfer layer (being HBETL) of electric hole blocking capability, rather than Typical ETL.The purpose using HBL or HBETL is to limit the restructuring between electric hole and the electronics injected, And make the exciton being positioned at EML generation present lax (relaxation), thus improved the efficiency of device. In order to meet these effects, electricity hole barrier material must have be adapted to block electricity hole from EML transmission to ETL, And by electronics from ETL be sent to EML HOMO Yu LUMO can rank, additionally need material to possess well Heat stability and electrochemical stability.
Nowadays, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (2,9-dimethyl-4,7-di Phenyl-1,10-phenanthroline, BCP), bathophenanthroline (bathophenanthroline, Bphen) has been used as phosphorus The typical material of HBL and HBETL in light OLED field.But, compared to Bphen and BCP, coffee quinoline spreads out Biology has relatively low glass transition temperature (Tg) (such as: the Tg of Bphen is 55 DEG C, and BCP is 65 DEG C), relatively Low cracking temperature (Td) is (such as: Bphen weight loss when 240 DEG C is less than 0.5%;BCP is weight when 260 DEG C Amount loss is less than 0.5%), and cracking temperature is relevant with heat resistance.This kind of material is difficult to operate in depositing operation, And the light-emitting device stability prepared is low, the half-life is short.U.S. Patent No. 7,119,204 relates to passing as electronics A series of coffee quinoline derivants being substituted of defeated material.U.S. Patent No. 7,282,586 relates to a kind of electronics that is used as and passes The specific coffee quinoline derivant of defeated material, is 2, double (5-(biphenyl-4-base)-1,3, the 4-oxadiazoles-2-base)-1 of 9-, 10-phenanthroline (2,9-bis (5-(biphenyl-4-yl)-1,3,4-oxadiazol-2-yl)-1,10-phenanthroline), and with prior art BCP material is compared, and it is 2000cd/m in brightness2Time, driving voltage is down to 7V from 8V, and is reached higher Current efficiency.U.S. Patent No. 7,754,348 relates to the substituted coffee of a series of 2,9-as electron transport material Quinoline derivant, if comparative example 1-3 and Alq carried with this case3Compare down, when driving voltage is 5V, aforementioned 2,9-substituted coffee quinoline derivant then reaches longer operation lifetime and higher brightness (luminance).U.S. Patent No. 7,982, No. 213 relate to a series of through aryl substituted coffee quinoline derivant, and organic EL phosphorescence light-emitting device uses this Stop that electron transfer layer can provide high efficiency, high brightness and height long-term through aryl substituted coffee quinoline derivant as electricity hole Tolerance level (long-term durability).U.S. Patent No. 8,114,529 relates to a series of having double coffee quinoline (bis-phenanthroline) compound of structural framework, utilizes this coffee quinoline compounds to stop electric transmission as electricity hole Layer, prepared organic EL phosphorescence light-emitting device has low driving voltage and well tolerable property.
Sustainable existence can effectively transmit electronics and can stop electricity hole, can have again good thermal stability and high-luminous-efficiency The demand of organic EL Material.According to above-mentioned reason, these that it is an object of the invention to solve prior art are asked Topic, and provide heat stability, high-luminous-efficiency, high brightness and long half-lift the time in terms of excellent the sending out of performance Electro-optical device.The present invention relates to one and there is the novel coffee quinoline derivant of formula (I) structure, may be used as electricity hole and stop electricity Son transmission material (HBETM), electron transport material (ETM), it has good charge carrier mobility with excellent Operational durability, it is possible to reduce driving voltage and power consumption, increases efficiency and the half-life length of organic el device.
Summary of the invention
The present invention provides a kind of coffee quinoline (phenanthroline) derivant, and it can be used for the electric hole in organic el device Stop electron transport material (hole blocking electron transport material, HBETM) or electric transmission material Material (electron transport material, ETM).This type of coffee quinoline derivant can overcome lacking of the material of prior art Lose, such as inefficient, the half-life is short and the problem of high power consumption.
It is an object of the present invention to provide a kind of electric hole that can be used in organic el device and stop electric transmission material Material (HBETM) or the coffee quinoline derivant of electron transport material (ETM).
The present invention has economic advantages on industrial practice.According to the present invention, relate to a kind of for organic el device Coffee quinoline derivant.Aforementioned coffee quinoline derivant can be by represented by lower formula (I):
Wherein L represents the arlydene being substituted or being unsubstituted with 6 to 30 ring carbon atoms;M represents 0 To the integer of 6, n represents the integer of 0 to 4, and p represents the integer of 0 to 4;Ar is for having 6 to 50 ring carbon The aryl being substituted or being unsubstituted of atom, aforesaid aryl can be phenyl, naphthyl, anthryl, phenanthryl, pyrenyl, bend Base or other alternative group;R1To R4Independently selected from by hydrogen atom, the warp with 1 to 20 carbon atom The alkyl replaced or be unsubstituted, the aryl being substituted or being unsubstituted with 6 to 30 carbon atoms and tool The group being made up of the heteroaryl being substituted or being unsubstituted of 3 to 30 carbon atoms.
Another object of the present invention is to, it is provided that a kind of organic el device, it includes being made up of negative electrode and anode Electrode, and at least include the material layer of coffee quinoline derivant as shown in formula (I), and aforesaid at least one material Layer is arranged at this between negative electrode and the anode of electrode.
Replace it is preferred that aforesaid at least one material layer can be electron transfer layer, electricity hole stop electron transfer layer or other tools Layer for function.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of the organic el device of the present invention.
6 transparency electrode 7 electricity hole implanted layers
8 electricity hole transport layer 9 luminescent layers
10 electricity barrier layer, hole 11 electron transfer layers
12 electron injecting layer 13 metal electrodes
Detailed description of the invention
The present invention is intended to probe into aforesaid coffee quinoline derivant and use the organic el device of this coffee quinoline derivant.Under Literary composition will provide the detailed description of production, structure and key element so that the present invention can be understood fully.Obviously the present invention Application be not limited to specific detail familiar to those skilled in the art.On the other hand, the common elements of common general knowledge It is not described in detail in the present invention with process, and the present invention should not produced unnecessary restriction.Now will hereinafter It is more fully described some preferred embodiments of the present invention.But, should be recognized by, the present invention can be except clearly retouching Extensive various other embodiments outside the embodiment stated is put into practice, i.e. it is real that the present invention can also be widely used in other Execute example, and specified in such as claim in addition to, the scope of the present invention is the most clearly limited.
Addressing a kind of coffee quinoline derivant herein, it has the chemical constitution shown in following formula (I).In a preferred embodiment In, aforementioned coffee quinoline derivant can be used for the electric hole of organic el device and stops electron transport material or electron transport material.
Wherein L represents the arlydene being substituted or being unsubstituted with 6 to 30 ring carbon atoms;M represent 0 to The integer of 6, n represents the integer of 0 to 4, and p represents the integer of 0 to 4;Ar is former for having 6 to 50 ring carbon The aryl being substituted or being unsubstituted of son, aforesaid aryl can be phenyl, naphthyl, anthryl, phenanthryl, pyrenyl, chrysenyl Or other alternative group;R1To R4Independently selected from by hydrogen atom, the warp with 1 to 20 carbon atom The alkyl replaced or be unsubstituted, the aryl being substituted or being unsubstituted with 6 to 30 carbon atoms and tool The group being made up of the heteroaryl being substituted or being unsubstituted of 3 to 30 carbon atoms.
In a preferred embodiment, according to the coffee quinoline derivant shown in formula (I), Ar has selected from by general formula A kind of structure in the group formed:
In a preferred embodiment, this coffee quinoline derivant can be further by shown in following formula (II):
Wherein L represents the arlydene being substituted or being unsubstituted with 6 to 30 ring carbon atoms;M represent 0 to The integer of 6, n represents the integer of 0 to 4, and p represents the integer of 0 to 4;Ar is former for having 6 to 50 ring carbon The aryl being substituted or being unsubstituted of son, aforesaid aryl can be phenyl, naphthyl, anthryl, phenanthryl, pyrenyl, chrysenyl Or other alternative group;R1To R4Independently selected from by hydrogen atom, the warp with 1 to 20 carbon atom The alkyl replaced or be unsubstituted, the aryl being substituted or being unsubstituted with 6 to 30 carbon atoms and tool The group being made up of the heteroaryl being substituted or being unsubstituted of 3 to 30 carbon atoms.
In a preferred embodiment, according to the coffee quinoline derivant shown in formula (II), Ar has selected from by general formula A kind of structure in the group formed:
In a preferred embodiment, in the group that the structure of this coffee quinoline derivant can be made up of general formula wherein Shown in a kind of:
On the other hand, addressing a kind of OLED herein, it can include be made up of negative electrode and anode To electrode, and this material layer to comprising at least one amine derivative as herein described between electrode.Refer to shown in Fig. 1, In a preferred embodiment, this kind of OLED can include transparency electrode 6, electricity hole implanted layer 7, electricity hole Transport layer 8, electronic barrier layer 9, luminescent layer 10, electron transfer layer 11, electron injecting layer 12 and metal electrode 13.In this device, electricity hole implanted layer 7 is arranged between transparency electrode 6 and metal electrode 13, electricity hole transport layer 8 are arranged between electron injecting layer 7 and metal electrode 13, and electronic barrier layer 9 is arranged at electricity hole transport layer 8 and gold Belonging between electrode 13, luminescent layer 10 is arranged between electronic barrier layer 9 and metal electrode 13, electron transfer layer 11 Be arranged between luminescent layer 10 and metal electrode 13, and electron injecting layer 12 be arranged at electron transfer layer 11 with Between metal electrode 13.Additionally, in a preferred embodiment, luminescent layer 10 can send phosphorescence, fluorescence, or other The light of generation can be electrically excited through organic material;More preferably, luminescent layer 10 can send phosphorescence or fluorescence.
Illustrate the detailed preparation of coffee quinoline derivant in the present invention below by way of exemplary embodiment, but the invention is not restricted to this Etc. exemplary embodiment.The preparation of some embodiments of coffee quinoline derivant in the embodiment 1-3 present invention.Embodiment 4 is opened up Show the manufacture of organic el device, and the I-V-B of organic el device test report, half-life.
Embodiment 1: the synthesis of compound EX1
The synthesis bromo-10-of 9-(naphthalene-1-base) anthracene (9-bromo-10-(naphthalen-1-yl) anthracene)
By the 9,10-dibromoanthracene (9,10-dibromoanthracene) of 40g (119mmol), 20.5g (119mmol) 1-naphthalene boronic acids (naphthalen-1-ylboronic acid), the tetrakis triphenylphosphine palladium (Pd (PPh of 1.38g (1.2mmol)3)4)、 After the 2M sodium carbonate of 120ml, 200ml ethanol and the mixing of 600ml toluene, process also through degassing (degas) It is placed under nitrogen environment, within 12 hours, reacts with 100 DEG C of heating subsequently.Mixture cooling after reaction is completed To room temperature, utilize ethyl acetate and water to extract organic layer, then utilize anhydrous magnesium sulfate to be dried organic layer and Forming residue after removing solvent, residue is purified via silica-filled col-umn chromatography, it is thus achieved that 19.2g The product (50mmol) of yellow solid, productivity is 42%.
Synthesis 4-(10-(naphthalene-1-base) anthracene-9-base) aniline (4-(10-(naphthalen-1-yl) anthracen-9-yl) aniline)
By the bromo-10-of 9-(naphthalene-1-base) anthracene of 30g (52.2mmol), 4-(the 4,4,5,5-tetramethyl of 13.7g (62.6mmol) -1,3,2-dioxaborolane-2-base) aniline (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) Aniline), the tetrakis triphenylphosphine palladium of 0.6g (0.52mmol), the 2M sodium carbonate of 52ml, 150ml ethanol and After the mixing of 450ml toluene, process through degassing and be placed under nitrogen environment, within 12 hours, enter with 100 DEG C of heating subsequently Row reaction.Mixture after reaction being completed is cooled to room temperature, utilizes ethyl acetate and water to extract organic layer, then will Organic layer forms residue after utilizing anhydrous magnesium sulfate to be dried and removing solvent, and residue is filled out via silicon dioxide The col-umn chromatography filled is purified, it is thus achieved that the product (32.3mmol) of 12.8g yellow solid, and productivity is 62%.
Synthesis N-(4-(10-(naphthalene-1-base) anthracene-9-base) phenyl)-2-nitroaniline (N-(4-(10-(naph -thalene-1-yl)anthracen-9-yl)phenyl)-2-nitroaniline)
By 4-(10-(naphthalene-1-base) anthracene-9-base) aniline of 10g (25.3mmol), the 1-iodo-2-nitre of 6.3g (25.3mmol) Base benzene (1-iodo-2-nitrobenzene), the acid chloride (Pd (OAc) of 56.7mg (0.25mmol)2)、4.86mg (50.6mmol) sodium tert-butoxide (sodium tert-butoxide), the mixture of 400ml o-Dimethylbenzene (O-xylene) pass through de- Gas disposal is placed under nitrogen environment, within 12 hours, reacts with 140 DEG C of heating subsequently.Mixing after reaction is completed Compound is cooled to room temperature, utilizes ethyl acetate and water to extract organic layer, then organic layer utilizes anhydrous magnesium sulfate carry out Forming residue after being dried and remove solvent, residue is purified via silica-filled col-umn chromatography, it is thus achieved that The product (8.6mmol) of 4.44g yellow solid, productivity is 34%.
Synthesis N1-(4-(10-(naphthalene-1-base) anthracene-9-base) phenyl) benzene-1,2-diamidogen (N1-(4-(10-(naph-thalen-1-yl) anthracen-9-yl)phenyl)benzene-1,2-diamine)
By N-(4-(10-(naphthalene-1-base) anthracene-9-base) the phenyl)-2-nitroaniline of 10g (19.3mmol), 3.24g (58mmol) Iron powder, 200ml ethanol mixture through degassing process be placed under nitrogen environment, subsequently with 80 DEG C of heating 30 minutes, add the hydrochloric acid of 12.1ml 37.5% (96.5mmol) subsequently, then within 12 hours, carry out with 80 DEG C of heating Reaction.Mixture reaction completed is cooled to room temperature.Add 13ml ammonia solution (ammonia solution), After the extremely cooling of the sodium potassium tartrate tetrahydrate (potassium sodium tartrate) of 21.8g (77.2mmol) and the water of 600ml Mixture, stirs 30 minutes.Utilize dichloromethane and water to extract organic layer, then organic layer is utilized anhydrous slufuric acid Magnesium forms residue after being dried and remove solvent, and residue carries out pure via silica-filled col-umn chromatography Change, it is thus achieved that the product (7.8g, 16mmol) of brown solid, productivity is 83%.
Synthesis 2-(4-bromophenyl)-1-(4-(10-(naphthalene-1-base) anthracene-9-base) phenyl)-1H-benzo [d] imidazoles (2-(4- bromophenyl)-1-(4-(10-(naphthalen-1-yl)anthracen-9-yl)phenyl)-1H-benzo[d]imidazole)
By N1-(4-(10-(naphthalene-1-base) anthracene-9-base) phenyl) benzene-1,2-diamidogen of 10g (20.5mmol), The bromo-benzaldehyde of the 4-(4-bromo-benzaldehyde) of 4.56g (24.7mmol), 782mg (4.1mmol) to benzene Sulphur formic acid (p-toluenesulfonic acid), the mixture of 200ml dry toluene process through degassing and are placed in nitrogen Under environment, within 12 hours, react with 110 DEG C of heating subsequently.Mixture after reaction being completed is cooled to room temperature, Dichloromethane and water is utilized to extract organic layer, then after organic layer is utilized anhydrous magnesium sulfate to be dried and removes solvent Forming residue, residue is purified via silica-filled chromatographic analysis, it is thus achieved that 3.74g yellow solid Product (5.7mmol), productivity is 28%.
Synthesis 1-(4-(10-(naphthalene-1-base) anthracene-9-base) phenyl)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane 0-2-yl) phenyl)-1H-benzo [d] imidazoles (1-(4-(10-(naphthalen-1-yl) anthracen-9-yl) phenyl)-2- (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-benzo[d]imidazole)
By 2-(4-bromophenyl)-1-(4-(10-(naphthalene-1-base) anthracene-9-base) phenyl)-1H-benzo [d] imidazoles of 5g (7.67mmol), The 4,4,4' of 2.14g (8.4mmol), 4', 5,5,5', 5'-prestox-2,2'-join (1,3,2-dioxaborolane) (4,4,4', 4', 5,5,5', 5'-octamethyl-2,2'-bi (1,3,2-dioxaborolane), the four (triphens of 177mg (0.15mmol) Base phosphine) palladium, the potassium acetate (potassium acetate) of 1.5g (15.5mmol), 100ml1,4-dioxanes (1,4-dioxane) Mixture through degassing process be placed under nitrogen environment, 100 ° of heating subsequently are reacted for 12 hours.Will be anti- Mixture after should completing is cooled to room temperature, utilizes ethyl acetate and water to extract organic layer, then organic layer is utilized nothing Water magnesium sulfate forms residue after being dried and remove solvent, and residue enters via silica-filled col-umn chromatography Row purification, it is thus achieved that the product (4.4mmol) of 3.1g yellow solid, productivity is 58%.
Synthesis compound EX1
By 3g (8.2mmol) 2-chloro-4,7-diphenyl-1,10-coffee quinoline (2-chloro-4,7-diphenyl-1,10- Phenanthroline), 6.28g (9mmol) 1-(4-(10-(naphthalene-1-base) anthracene-9-base) phenyl)-2-(4-(4,4,5,5-tetramethyl -1,3,2-dioxaborolane-2-base) phenyl)-1H-benzo [d] imidazoles, 189mg (0.16mmol) four (triphenylphosphine) Palladium, 8.2g2M sodium carbonate (Na2CO3), the mixture of 40ml ethanol and 120ml toluene process juxtaposition through degassing Under nitrogen environment, within 12 hours, react with 100 DEG C of heating subsequently.Mixture after reaction being completed is cooled to Room temperature, utilizes dichloromethane and water to extract organic layer, then utilizes anhydrous magnesium sulfate to be dried organic layer and remove Forming residue after solvent, residue is purified via silica-filled col-umn chromatography, it is thus achieved that 4.8g yellow The EX1 (5.3mmol) of solid, shaped, productivity is 65%.MS(m/z,FAB+): 902.8;1H NMR(CDCl3, 500MHz): chemical shift (ppm) 8.69 (d, 2H), 8.49 (d, 2H), 8.23 (s, 1H), 8.17~8.11 (d, 2H), 7.89~7.83 (m, 4H), 7.80~7.68 (m, 6H), 7.65~7.49 (m, 14H), 7.45~7.41 (m, 2H), 7.40~7.27 (m, 9H)。
Embodiment 2: the synthesis of compound EX6
Synthesis 4,7-diphenyl-2-(4-(1-(4-(10-phenylanthracene-9-base) phenyl)-1H-benzo [d] imidazoles-2-base) benzene Base)-1,10-coffee quinoline (4,7-diphenyl-2-(4-(1-(4-(10-phenylanthracen-9-yl) phenyl)-1H-benzo [d] imidazol-2-yl)phenyl)-1,10-phenanthroline)
Except with 1-(4-(10-(phenylanthracene-9-base) phenyl)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2- Base) phenyl)-1H-benzo [d] imidazoles (1-(4-(10-phenylanthracen-9-yl) phenyl)-2-(4-(4,4,5,5- Tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl)-1H-benzo [d] imidazole) replace 1-(4-(10-(naphthalene -1-base) anthracene-9-base) phenyl)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2-base) phenyl)-1H-benzo [d] Imidazoles, remaining step is all identical with the synthetic method described in embodiment 1, it is thus achieved that 4.3g product (EX6), productivity is 62%.MS(m/z,FAB+): 852.8;1H NMR(CDCl3, 500MHz): chemical shift (ppm) 8.68 (d, 2H), 8.50 (d, 2H), 8.25 (s, 1H), 8.19~8.13 (d, 2H), 7.91~7.82 (m, 4H), 7.78~7.68 (m, 6H), 7.65~7.48 (m, 12H), 7.46~7.42 (m, 2H), 7.40~7.28 (m, 9H).
Embodiment 3: the synthesis of compound EX12
Synthesis 2-(4-(1-(4-(10-(naphthalene-2-base) anthracene-9-base) phenyl)-1H-benzo [d] imidazoles-2-base) phenyl)-4,7-hexichol Base-1,10-coffee quinoline (4,7-diphenyl-2-(4-(1-(4-(10-phenylanthracen-9-yl) phenyl)-1H-benzo [d] imidazol-2-yl)phenyl)-1,10-phenanthroline)
Except with 1-(4-(10-(naphthalene-2-base) anthracene-9-base) phenyl)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxo bora ring penta Alkane-2-base) phenyl)-1H-benzo [d] imidazoles) (1-(4-(10-(naphthalene-2-yl) anthracen-9-yl) phenyl)- 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl)-1H-benzo [d] imidazole) replace 1-(4-(10-(phenylanthracene-9-base) phenyl)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2-base) benzene Base)-1H-benzo [d] imidazoles, remaining step is all identical with the synthetic method described in embodiment 1, it is thus achieved that 4.87g product (EX12), productivity is 66%.MS(m/z,FAB+): 902.8;1H NMR(CDCl3, 500MHz): chemistry Displacement (ppm) 8.70 (d, 2H), 8.51 (d, 2H), 8.22 (s, 1H), 8.16~8.09 (d, 2H), 7.88~7.83 (m, 4H), 7.80~7.70 (m, 6H), 7.65~7.51 (m, 14H), 7.47~7.41 (m, 2H), 7.40~7.28 (m, 9H).
Produce the conventional method of organic el device
According to the present invention, it is provided that a kind of glass being coated with through indium tin oxide (indium tin oxide, ITO) is (hereafter ITO base material), its resistance be 9 ohm-sq (ohm/square) to 12 ohm-sq and thickness be that 120nm arrives 160nm, and utilize multiple cleaning (such as: cleaning agent, deionized water) to be cleaned in ultrasonic bath. Before the vapor deposition processes carrying out organic layer, by UV and ozone process further cleaned after ITO base material. All pretreatment process for ITO base material are all carried out in toilet's (100 grades) environment.
Fine vacuum unit (10 at such as resistance heated quartz boat (resistively heated quartz boats) etc.-7Torr) In, by vapour deposition, these organic layers are sequentially coated on ITO base material.Pass through quartz crystal monitor (quartz-crystal monitor) accurately monitors or sets thickness and the vapor deposition rate (0.1nm/sec of respective layer To 0.3nm/sec).As it has been described above, indivedual layers are also possible to be made up of more than one compounds, imply that and in general mix The miscellaneous material of main part having dopant material.This types of material can be by carrying out common gasification from two or more source (co-vaporization) reach.
Two pyrazines also [2,3-f:2,3-] quinoxaline-2,3,6,7,10,11-pregnancy nitrile (Dipyrazino [2,3-f:2,3-] Quinoxaline-2,3,6,7,10,11-hexacarbonitrile, HAT-CN) in organic el device, can be used as electricity Hole implanted layer.Double (the phenyl)-benzidine of double (naphthalene-1-the base)-N, N-of N, N-(N, N-Bis (naphthalene-1-yl)- N, N-bis (phenyl)-benzidine, NPB) the most frequently used it is used as electricity hole transport layer.With reference to US 8,962,160 patent Case, 10,10-dimethyl-12-(4-(pyrene-1-base) phenyl)-10H-indeno [1,2-b] triphenylene (10,10-Dimethyl-12-(4- (pyren-1-yl) phenyl)-10H-indeno [1,2-b] triphenylene, PT-312) can be used as blue light emitting main body (blue emitting host), and N1, tetra-tolyl pyrene-1 of N1, N6, N6-, 6-diamidogen (N1, N1, N6, N6-tetramtolylpyrene-1,6-diamine) (D1) can be used as blue light object (blue guest).One In embodiment, organic el device uses 2-(10,10-dimethyl-10H-indeno [2,1-B] triphenylene-13-base)-4,6-bis- Phenyl-1,3,5-triazine (2-(10,10-dimethyl-10H-indeno [2,1-b] triphenylen-13-yl)-4,6-diphenyl- 1,3,5-triazine) (HB1), 2-(10,10-dimethyl-10H-indeno [2,1-B] triphenylene-12-base)-4,6-diphenyl-1,3,5- Triazine (2-(10,10-dimethyl-10H-indeno [2,1-b] triphenylen-12-yl)-4,6-diphe-nyl-1,3,5-triazine) (HB2) and general formula HB3 as electricity hole barrier material (HBM), 4,7-diphenyl-2-(4-(1-phenyl-1H- Benzo [d] imidazoles-2-base) phenyl)-1,10-coffee quinoline (4,7-diphenyl-2-(4-(1-phenyl-1H-benzo [d] Imidazol-2-yl) phenyl)-1,10-phenanthroline) (ET1), 2,9-bis-(naphthalene-2-base)-4,7-diphenyl-1,10-coffee quinoline (2,9-di (naphthalen-2-yl)-4,7-diphenyl-1,10-phenanthroline) (ET2) is used as electric transmission material Material (ETM) with 5% lithium metal (Li) or 8-hydroxyquinoline ester group-lithium (8-hydroxyquinolato-lithium, LiQ) Carry out co-depositing (co-deposition).For producing the OLED of the prior art of standard organic el device control group Material and the present invention are for comparing the material of prior art, and its chemical constitution is as follows:
Typical organic el device is by the low workfunction metal institute structure of such as Al, Mg, Ca, Li, K or a combination thereof Becoming, and become negative electrode by heat evaporation mode, low workfunction metal can be injected into electron transfer layer from negative electrode by auxiliary electron. Additionally, in order to reduce the barrier that electronics injects, and improve organic el device performance, in negative electrode and electric transmission Thin film electronic implanted layer is introduced between Ceng.The conventional material of electron injecting layer be have low work function metal halide or Metal-oxide, such as: LiF, LiQ, MgO or Li2O.On the other hand, after organic el device manufactures, By using PR650 spectral scan spectrogrph (PR650 spectra scan spectrometer) to measure EL spectrum (EL spec-tra) and CIE coordinate (CIE coordination).Additionally, utilize Keithley 2400 programmable to set Meter voltage-to-current source (Keithley 2400 programmable voltage-current source) obtains current/voltage (current/voltage), luminescence/voltage (luminescence/voltage) and the spy of yield/voltage (yield/voltage) Property.The said equipment is to operate in room temperature (about 25 DEG C) and atmospheric pressure environments.
Embodiment 4
Use is similar to the program of above-mentioned conventional method, and generation has having of a blue-fluorescence of following two kinds of apparatus structures Machine EL device, the first apparatus structure is ITO/HAT-CN (20nm)/NPB (110nm)/doping 5%D1 ETM (the 35nm)/Al (160nm) of PT-312 (30nm)/HBM/ doping 5%Li, the second apparatus structure is The PT-312 (30nm) of ITO/HAT-CN (20nm)/NPB (110nm)/doping 5%D1/HBM/ codeposition 50% The ETM (40nm) of LiQ/LiQ (1nm)/Al (160nm).Send out the organic el device test report of blue-fluorescence I-V-B (when 1000 nits (nit)) and half-life, wherein the half-life was defined as 1000 as shown in table 1 and table 2 cd/m2Original intensity drop to time of half.
Table 1
Table 2
In the preferred embodiment of above organic el device test report (seeing table 1 and table 2), show compared to existing There is the organic EL Material of technology, the conduct in organic el device of the coffee quinoline derivant shown in formula (I) in the present invention When electricity hole stops electron transport material or electron transport material, the most excellent characteristic can be shown.More particularly, On the one hand, the organic el device of the present invention uses the coffee quinoline derivant shown in this formula (I) as electron transport material With aforesaid electricity hole barrier material such as HB1, HB2 or HB3 time collocation use time, can show low power consumption, High efficiency and long half-lift;Additionally, on the other hand, described coffee quinoline derivant can act also as electricity hole and stops electronics Transmission material, and without using with the barrier material collocation of electricity hole, can show the best compared with the material of prior art equally Good performance.
In sum, the present invention relates to a kind of coffee quinoline derivant, it has the structure as shown in formula (I), and permissible Electron transport material or electron transport material is stopped as the electric hole in organic el device.The knot of aforementioned coffee quinoline derivant Structure is to represent with following formula (I):
Wherein L represents the arlydene being substituted or being unsubstituted with 6 to 30 ring carbon atoms;M represents 0 To the integer of 6, n represents the integer of 0 to 4, and p represents the integer of 0 to 4;Ar is for having 6 to 50 ring carbon The aryl being substituted or being unsubstituted of atom, aforesaid aryl can be phenyl, naphthyl, anthryl, phenanthryl, pyrenyl, bend Base or other alternative group;R1To R4Represent independently hydrogen atom, have 1 to 20 carbon atom through taking Generation or the alkyl, the aryl being substituted or being unsubstituted with 6 to 30 carbon atoms that are unsubstituted or have 3 The heteroaryl being substituted or being unsubstituted to 30 carbon atoms.
The above is only presently preferred embodiments of the present invention, not has any pro forma restriction to the present invention, though So the present invention relates to as above with preferred embodiment, but is not limited to the present invention, in any art Technical staff, in the range of without departing from technical solution of the present invention, when the available above-mentioned technology contents related to is made Permitted to change or modify the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to this Any simple modification, equivalent variations and the modification that above example is made by the technical spirit of invention, all still falls within this In the range of bright technical scheme.

Claims (10)

1. a coffee quinoline derivant, it has a structure shown in following formula (I):
Wherein L represents the arlydene being substituted or being unsubstituted with 6 to 30 ring carbon atoms;M represents 0 To the integer of 6, n represents the integer of 0 to 4, and p represents the integer of 0 to 4;Ar is for having 6 to 50 ring carbon The phenyl being substituted or being unsubstituted of atom, naphthyl, anthryl, phenanthryl, pyrenyl or chrysenyl;R1To R4Independently Selected from the alkyl being substituted or being unsubstituted that by hydrogen atom, there is 1 to 20 carbon atom, have 6 to 30 The aryl being substituted or being unsubstituted of individual carbon atom and there is being substituted or without taking of 3 to 30 carbon atoms The group that the heteroaryl in generation is formed.
2. coffee quinoline derivant as claimed in claim 1, wherein Ar has selected from the group being made up of general formula A kind of structure in group:
3. coffee quinoline derivant as claimed in claim 1, wherein said derivant has a structure shown in following formula (II):
Wherein L represents the arlydene being substituted or being unsubstituted with 6 to 30 ring carbon atoms;M represent 0 to The integer of 6, n represents the integer of 0 to 4, and p represents the integer of 0 to 4;Ar is former for having 6 to 50 ring carbon The phenyl being substituted or being unsubstituted of son, naphthyl, anthryl, phenanthryl, pyrenyl or chrysenyl;R1To R4Independently Selected from the alkyl being substituted or being unsubstituted that by hydrogen atom, there is 1 to 20 carbon atom, there are 6 to 30 The aryl being substituted or being unsubstituted of carbon atom and there is being substituted or being unsubstituted of 3 to 30 carbon atoms The group that formed of heteroaryl.
4. coffee quinoline derivant as claimed in claim 3, wherein Ar has selected from the group being made up of general formula A kind of structure in group:
5. the coffee quinoline derivant as according to any one of claim 1-4, the structure of wherein said coffee quinoline derivant by under Shown in one of which in the group that row formula is formed:
6. an OLED, it includes pair of electrodes and at least one material layer, described to electrode by the moon Pole and anode are formed, and described at least one material layer includes coffee quinoline derivant as claimed in claim 1 and is arranged at Described to electrode between.
7. OLED as claimed in claim 6, wherein said at least one material layer is electron transfer layer.
8. OLED as claimed in claim 6, wherein said at least one material layer is that electricity hole stops electricity Sub-transport layer.
9. the OLED as according to any one of claim 6-8, it farther includes an electricity hole and stops Layer, and described electricity barrier layer, hole includes selected from the group that is made up of the compound of structure shown in general formula Plant or multiple:
10. OLED as claimed in claim 7, wherein said electron transfer layer farther include lithium, 8-hydroxyquinoline-lithium or a combination thereof.
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